United Express IAD PHL UA4563
United Express
FLIGHT
UA4563
IAD
Washington Dulles International Airport
08:20
03 Mar
1 h 17 m
PHL
Philadelphia International Airport
09:37
03 Mar
Aircraft: crj7 Altitude: 25,000ft (7.6km) Distance: 117 nm Duration: 1 h 17 m
AIRCRAFT
crj7
ALTITUDE
25,000ft
DISTANCE
117 nm
DURATION
1 h 17 m
Times and gates subject to change. Verify with airline.
Turbulence Comfort Along Route Comfort View
Comfort Score: Combines turbulence probability (GTG forecast) with intensity (ZTI analysis). High scores indicate both high probability AND high intensity turbulence.
Smooth
Light
Moderate
Severe
Flight Smoothness Score
7.5 /10
Smoothness
Mostly Smooth
100%
Light

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AI-Powered Flight Briefing
📊 500 data points analyzed HIGH Confidence
Your Flight

We analysed more than 500 data points along your route from Washington Dulles International Airport, Dulles to Philadelphia International Airport, Philadelphia.

Your Journey Beta

Your route takes you over the Appalachian Mountains – conditions there can sometimes cause light turbulence.

Mostly Smooth

Overall conditions look mostly smooth with occasional light bumps. Nothing to worry about.

Takeoff

Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 56 knots.

Landing

Landing should feel smooth with possible light bumps with typical approach conditions.

You're in Safe Hands

If you feel nervous at any point, remember that turbulence is expected, safe, and part of normal flying. The crew is monitoring everything, and the aircraft is built to handle far more than anything you will feel. Have a safe and calm flight.

Relaxation Exercises
ZeroTurb Index (ZTI): Powered by our proprietary turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity for precise, real-time forecasting. Learn more
Live data from ECMWF global forecast models • 12 atmospheric pressure levels analyzed • Updated every 6 hours
Flight Timeline 1h 17min
Maximum turbulence expected per segment
Takeoff
Light
0:15-0:39
Light
0:39-1:02
Light
Landing
Light
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Turbulence Metrics ZTI and EDR (scaled)
ZTI Scale
Smooth
<12
Light
12-30
Moderate
30-45
Severe
>45
EDR Scale
Smooth
<6
Light
6-24
Moderate
24-42
Severe
>42

Airport Weather
Departure
IAD
Forecast
0°C (Now)
Overcast • 3 kt • IFR — Low visibility, delays likely
Arrival
PHL
Forecast
1°C (Now)
Overcast • 5 kt • MVFR — Reduced visibility, minor delays possible
☀️ Morning Flight

Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.

Regional Jet (Small)

Regional jets are smaller and lighter, so turbulence may be more noticeable to passengers. However, they are fully certified and safe for all weather conditions.

Looking for more detailed analysis?

Data Sources & Our Approach
ZeroTurb's Custom Algorithm: We've developed a proprietary ZeroTurb Index (ZTI) algorithm that combines three meteorological indices weighted by their predictive accuracy. This gives you transparent, passenger-focused turbulence probability instead of vague categories.

This forecast integrates data from:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.

How accurate are turbulence alerts? Alerts are based on updated forecast models and pilot reports, and can change as departure approaches.